...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Engineering in Agriculture >DESIGN AND EXPERIMENTS OF COAXIAL CONTRA-ROTATING SUGARCANE BASE CUTTER WITH TIME-FREQUENCY CONTROL
【24h】

DESIGN AND EXPERIMENTS OF COAXIAL CONTRA-ROTATING SUGARCANE BASE CUTTER WITH TIME-FREQUENCY CONTROL

机译：时频控制同轴对比甘蔗基刀具的设计与实验

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A laboratory-based cutting platform with speed control was developed to investigate the cutting mechanism for the support-cutting of sugarcane. A coaxial contra-rotating base cutter was designed to facilitate sugarcane support-cutting in a laboratory setting. The cutting platform, which consists of two discs with cutting blades, was driven by two variable-frequency electric motors. To manipulate the speed of each motor independently, a time frequency controller was designed to handle system nonlinearity and to maintain system stability subject to speed variation. To validate the cutter design, a series of idle running tests and cane-cutting tests were implemented using the laboratory-based cutting platform. The results indicated that the rotating speed of the two cutting discs could be adjusted smoothly. The controller capped the overshoot under 1% in the speed step response and kept the fluctuation of the speed difference of the two cutting discs at less than 2.5 rpm. Evaluating the cane quality of support-cutting against free-cutting showed that support-cutting decreased the stubble damage rate from 22.67% to as little as 6.67%. The results also suggested that the time-frequency-controlled cutting platform was feasible for subsequent investigation for a better understanding of sugarcane support-cutting, such as the variation of energy consumption or stubble damage rate with different rotating speed or different blade shape, which will provide constructive suggestions for the future base cutter design.
机译：开发了一种基于实验室的切割平台，用于研究甘蔗的支撑切割的切削机制。同轴对比旋转基板切割器设计用于促进甘蔗在实验室设置中的支撑切割。由两个具有切割刀片组成的切割平台由两个可变频率电动机驱动。为了独立地操纵每个电动机的速度，设计时间频率控制器来处理系统非线性并保持系统稳定性受到速度变化的影响。为了验证刀具设计，使用基于实验室的切割平台实现了一系列怠速运行测试和甘蔗切割测试。结果表明，两个切割盘的旋转速度可以平滑地调节。控制器在速度阶跃响应中盖上1％以下的过冲，并保持两个切割盘的速度差的波动，小于2.5rpm。评估甘蔗质量对抗切割的支撑切割的质量表明，支撑切割降低从22.67％的茬损伤率降低到略低于6.67％。结果还提出了时频控制的切割平台可用于随后的调查，以更好地了解甘蔗支撑切割，例如具有不同旋转速度或不同叶片形状的能量消耗或茬损伤率的变化为未来的基础刀具设计提供建设性建议。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号